Travertine and Lignite Types and Facts

Travertine

Lignite

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Types

Thermal Travertine and Tufa

Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

Features

Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock

Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel

Archaeological Significance

Monuments

Famous Monuments

Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Types of Travertine and Lignite

Some rocks according to their use or texture are classified into different types. Know more about Travertine Texture and Lignite Texture. Types of Travertine are Thermal Travertine and Tufa whereas the types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite.During historic times, some rocks depending on their hardness were used to create Pictographs and Petroglyphs. Rocks which are hard were generally not used. Pictographs are paintings or drawings that have been placed or created on the surface of rock. Travertine and Lignite were for creating pictographs. Petroglyph is an image which is carved into a rock. These are images created by removing part of a rock surface by incising, picking, carving or abrading, as a form of rock art. Travertine and Lignite were for creating petroglyphs.